[OpenLayers-Users] getDataExtent delay problem

[Greg Allensworth]

> to load a base WMS layer and a KML file on it. The problem is that I
> want to display the map just arround the bounding box of the KML file
> but the method getDataExtent only returns something usefull when the
> method has returned. Some ideias ?

Yep. The Vector layer loading is asynchronous; at the time you add the 
layer to the map, the data isn't ready. So, have the Layer catch the 
"loadend" event, and have it respond to its freshly-loaded data *after* 
it has loaded.

vectorlayer.events.register('loadend', vectorlayer, function () {
    map.zoomToExtent( this.getDataExtent() );
});


-- 
Greg Allensworth, Web GIS Developer
BS  A+  Network+  Security+  Linux+  Server+
GreenInfo Network - Information and Mapping in the Public Interest
564 Market Street, Suite 510  San Francisco CA 94104
PH: 415-979-0343 x302  FX: 415-979-0371    email: gregor at greeninfo.org
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